SZ; Reviewed:
SPOC 8/10/2007
Solution & Interoperability Test Lab Application Notes
©2007 Avaya Inc. All Rights Reserved.
11 of 30
ACM-Cisco-CM-GK.doc
Separate signaling and trunk groups are required for Avaya Communication Manager to receive
calls. When Avaya Communication Manager receives a call setup message from a Cisco
CallManager via the Cisco 2811 Gatekeeper, Avaya Communication Manager will try to match
it to a signaling group based on the remote GW’s IP address. The call will be denied if there is
no match. To reduce the configuration required, the Far-end Node Name can be left unspecified,
or an inbound signaling group can be configured for each GW from which Avaya
Communication Manager should accept calls. The following screen shows the configuration for
inbound signaling group 21. Note that Near-end Listen Port must be 1720 to accept incoming
calls (TCP port 1720 for H.225 call setup messages). The LRQ Required is set to n. Like the
configuration for signaling group 20, Direct IP-IP Audio Connections and IP Audio Hairpinning
are set to n, DTMF over IP is configured to out-of-band, and the Far-end Network Region is set
to 2.
display signaling-group 21 Page 1 of 5
SIGNALING GROUP
Group Number: 21 Group Type: h.323
Remote Office? n Max number of NCA TSC: 0
SBS? n Max number of CA TSC: 0
IP Video? n Trunk Group for NCA TSC: 20
Trunk Group for Channel Selection: 21
Supplementary Service Protocol: a
T303 Timer(sec): 10
Near-end Node Name: procr Far-end Node Name:
Near-end Listen Port: 1720 Far-end Listen Port:
Far-end Network Region: 2
LRQ Required? n Calls Share IP Signaling Connection? n
RRQ Required? n H245 Control Addr On FACility? n
Media Encryption? n Bypass If IP Threshold Exceeded? n
H.235 Annex H Required? n
DTMF over IP: out-of-band Direct IP-IP Audio Connections? n
IP Audio Hairpinning? n
Interworking Message: PROGress
DCP/Analog Bearer Capability: 3.1kHz
The following screen captures show the configuration of an IP trunk group 21 for incoming calls
from Location B.
display trunk-group 21 Page 1 of 21
TRUNK GROUP
Group Number: 21 Group Type: isdn CDR Reports: y
Group Name: OUTSIDE CALL COR: 1 TN: 1 TAC: 121
Direction: two-way Outgoing Display? n Carrier Medium: H.323
Dial Access? n Busy Threshold: 255 Night Service:
Queue Length: 0
Service Type: tie Auth Code? n
Member Assignment Method: manual